{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 29,
   "id": "3553b02d",
   "metadata": {},
   "outputs": [
    {
     "ename": "IndentationError",
     "evalue": "expected an indented block (2306023194.py, line 14)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [29]\u001b[1;36m\u001b[0m\n\u001b[1;33m    print(\"商品编号: \"+str(i),product_list[i])\u001b[0m\n\u001b[1;37m    ^\u001b[0m\n\u001b[1;31mIndentationError\u001b[0m\u001b[1;31m:\u001b[0m expected an indented block\n"
     ]
    }
   ],
   "source": [
    "product_list = [\n",
    "    [\"自行车\",\"299\"],\n",
    "    [\"Ipone 14 Pro\",\"8000\"],\n",
    "    [\"NFT 盲盒\",\"28\"],\n",
    "    [\"许老师的Python书\",\"80\"],\n",
    "]\n",
    "\n",
    "shopping_car = []\n",
    "\n",
    "Alipay = int(input(\"请输入余额：\"))\n",
    "while True:\n",
    "    print(\"------商品列表-----\")\n",
    "    for i in range(4):\n",
    "    print(\"商品编号: \"+str(i),product_list[i])\n",
    "    user_choice = input(\"请输入商品编号：\")\n",
    "  #情景1：用户输入了商品编号：shopping\n",
    "if user_choice.isdigit():\n",
    "    #判断钱够不够，商品是谁？==>product_list[user_choice][1]\n",
    "    if Alipay >= product_list[int(user_choice)][1]:\n",
    "        Alipay = Aliapy - product_list[int(user_choice)][1] # 买完商品剩余的钱\n",
    "        print(\"您购买的商品已增加到购物车~~您的余额还有:\",Alipay)\n",
    "    else:\n",
    "        print(\"您的余额不足，请更换支付方式\")\n",
    "#情景2：用户输入”q“，退出购买\n",
    "elif user_choice ==\"q\":\n",
    "    print(\"您的购物车: \",shopping_car)\n",
    "    print(\"您的余额还有： \",Alipay)\n",
    "    break\n",
    "else:\n",
    "    print(\"您输入的商品不存在或输入有误，请重新尝试\")\n",
    "\n"
   ]
  },
  {
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   "execution_count": null,
   "id": "a8bfa730",
   "metadata": {},
   "outputs": [],
   "source": []
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  {
   "cell_type": "code",
   "execution_count": null,
   "id": "783cb862",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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